You can't cut wet grass!

One of my senior lady customers comes outside as I was starting on her lawn yesterday. It had been raining most of the day so the lawn was very wet. She says to me that "the next time that it is raining on her cut day, that I should skip her until the next week". She says that she's an ol' farm girl and she knows that you can't cut wet grass.
Told her that her lawn would be 12" high then and I'd have to charge her double. She thought I was kidding.

Imagine if we never cut wet grass. Wait till noon for the dews to dry off everyday. We can live off 8 - 10 cuts a week, right?
Told her about having sharp blades, high-lift blades, good mowers, and so on. I think I finally convinced her that I could do a good cut when it's wet. Looked pretty darn good to me when I was done.

I had the same arguement with one of my customers today, I was already half way done when she came out. She still told me to come back and I said ok but it is going to be next week cause I am busy till then and its going to cost you double. She said we will have to see, even know there is nothing to see. Either I get double or she gets the boot.